fguedry; Your Escape has OBDII capabilities. It will store misfire codes. Have the codes retrieved and post them here. You may want to try some gas drier. NAPA stores sell a product that, in my opinion, is the best. (Thermo-Aid) If the misfire doesn't 'last long enough' the computer may not 'see' it? You could, very easily, have a plug or a wire breaking down under load. Or, an injector that needs cleaning or replacement. Get us any codes that are stored and we can go from there. Loren SW Washington

Since your car has a "coil on plug" system, it has a separate coil for each cylinder and does not have plug wires. They are pretty notorious for weak coils acting up but worn plug will make it worse. As Loren stated, the computer should store codes that will identify the bad cylinders and you will likely have to change the coil for that cylinder plus all the plugs if they are due.

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